Safety hook



FIG. 1 is a side perspective view of a safety hook showing my new design;

FIG. 2 is an another side perspective view thereof, showing the locking bar in closed condition;

FIG. 3 is an opposite side perspective view of FIG. 2; and

FIG. 4 is an opposite side prospective view of FIG. 1. 

The ornamental design for a safety hook, as shown and described. 